12567220456 has 32 divisors (see below), whose sum is σ = 27094991040. Its totient is φ = 5352905088.

The previous prime is 12567220453. The next prime is 12567220469. The reversal of 12567220456 is 65402276521.

It is not an unprimeable number, because it can be changed into a prime (12567220453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679261 + ... + 697516.

It is an arithmetic number, because the mean of its divisors is an integer number (846718470).

Almost surely, 2^12567220456 is an apocalyptic number.

It is an amenable number.

12567220456 is an abundant number, since it is smaller than the sum of its proper divisors (14527770584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12567220456 is a wasteful number, since it uses less digits than its factorization.

12567220456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376953 (or 1376949 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

Adding to 12567220456 its reverse (65402276521), we get a palindrome (77969496977).

The spelling of 12567220456 in words is "twelve billion, five hundred sixty-seven million, two hundred twenty thousand, four hundred fifty-six".